2500XL/2  (250-4075)               Battery              Faxback Doc. # 1487

The real-time clock maintains the system time and date. An internal battery 
powers the clock, enabling it to maintain the correct time and date when the 
computer power is off. Replacement batteries (23-162) are available at Radio 
Shack stores.

The clock battery should last at least three years with normal use. When it 
fails, the computer will not retain time and date information correctly.

If the computer does not restart when you turn it on or reset it, it could 
indicate that the battery is weak or dead. Before replacing the battery, refer 
to "Main Logic Board Layout" to locate the battery socket.

If you do not want to replace the battery yourself, a service technician at a 
Radio Shack Service Center will replace it for you.

To replace the battery:

1. Gently lift the battery clip and remove the old battery from the socket on 
   the main logic board.

2. Position the new battery with the positive side (+) up and insert as 
   illustrated:

3. Run Setup to enter and store the system time and date.